Sleeve valve internal combustion engine



June 23, 1931. J. A. ANGLADA 1,811,450

SLEEVE VALVE INTERNAL COMBUSTION ENGINE Filed Feb. 12. 1927 aw June 23, 1931 PATENT OFFICE JOSEPH A. ANGLAIDA, OF J'ENKINTOWN, PENNSYLVANIA arm VALVE INTERNAL COMBUSTIQN ENGINE Application filed February 12, 1927. Serial No. 167,617.

This'invntion relates to an improvement in rotary sleeve valve internal combustion engin'es. v

It is an object of this invention to provide a rotary sleeve valve internal combustion en 'ne with an innerworking cylinder insertable from below and having an integral artificially cooled upper combustion portion.

Another object of this invention isto provide simple means for maintaining the inner working cylinder in alignment within the outer cylinder, F

A further object of this invention is to provide a rotary sleeve valve internal combustion 16 on 'no having a stationary inner working cylin er supported a 'ainst, axial movement at its lower end and aving an integral artificially cooled head forming. a combustion chamber and acting to cool the valve sleeve 20 on the inside thereof.

Another object of this invention is to rovide a rotary sleeve valve internal com ustion enginewith an inner working cylinder having an integral head, and being removable from below without disturbing the sleeve valve or the main en ine head.

Another object 0 this invention is to simplify the construction and assembly of a ron tar sleeve valve internal combustion engine $0 an increase the efiiciency thereof.

Various other objects and advantages will ap ar as the description roceeds.

eferrin now to the drawing which discloses a pre erred form of embodiment of my invention:

Figure 1 is a sectional view of a single cylinder engine showing my invention applied thereto.-

As shown in the figure the engine consists of the usual counterbalanced crankshaft 1, connecting rod 2, and piston 3. The crank shaft is mounted in bearings 4, preferably of the split t in the crank case 5.

' Extending u wardly from the crank case is a jacketed cylmder.6 whichmay be either integral with or detachably connected to-the crank casein any desirable manner. Concentrio with, and spaced from the cylinder 6 is an inner Working cylinder 7 mounted at its lower end by a shouldered flange 8 and bolts 9. The piston 3 ,reciprocates in this working cylinder 7. v

A rotating sleeve valve 10 is located in the space between the'two cylinders and is driven from the crank shaft either continuously, intermittently or at a variable speed by an suitable means as through gears 11, stub sha 12, bevel gear 13, and gear 14 on the sleeve valve 10, as is clearly shown in the drawing.

The upper end of the working c linder 7 is closed by a ported water j ackete combustion chamber formed integral with said working cylinder. This water jacket, designated as 15 on the drawing, is designed not only to cool the combustion chamber and ports, designated as 16 and 17, but also to cool the upper ortion of the sleeve valve 10. The water acket being integral with the working cylinder materially cools the side walls thereof, and substantiall eliminates the troublesome expansion prob em thus permitting a very simple and efficient construction. Extending, upwardly from the outer closed end of the working cylinder 7 and in axial alignment therewith, is a short cylindrical threaded por- 7: tion 18, the function of which will be fully described hereinafter. The jacketed outer cylinder 6 is provided with ports which align with the ports in the inner working cylinder 7 The sleeve valve 8( 10 is also provided with one or more ports which, as the sleeve valve rotates, come into alignment with the ports -in the cylinders 6 and 7 thus opening and closing these passageways. The number of ports in the sleeve valve 8: is, of course, determined by the relative speed of rotation of the sleeve valve and the crank shaft. In a four cycle-engine each port must be 0 ened once every two revolutions of the cran shaft. 7 9

The upper end of the inner working cylinder 7 is held in centered position with respect to the outer cylinder 6 by a main cylinder head 19 which is provided with a central opening 20. This head 19 is secured by bolts 21 to the outer cylinder 6 with the central opening 20 concentric with said cylinder 6. The cylindrical threaded portion 18 of the inner working cylinder 7 projects through the central opening 20 in the main engine head 19, and is clamped thereto by nut 22, thus centering the cylinder 7 within the cylinder 6.

The main engine head 19 is provided with cooling medium circulating passages 23 which communicate with the jacket of the cylinder 6 and the water jacket 15 of the inner working cylinder 7 as is clearly shown in the drawing. It is, of course, understood that while not shown in the drawing suitable gaskets will be provided between the main engine head 19 and the cylinders 6 and 7.

Antifriction thrust bearings 2a and 25 are provided at the ends of the rotary sleeve valve 10. The upper bearing 24 also serves to help center the upper end on the working cylinder 7. If desired, these hearings may be mounted in retainers of which there are many types now in common use. An annular groove 26 is provided in the flange 8 of the inner working cylinder 7 to receive the lower thrust hearing 25.

A lubrication chamber 27 surrounds the lower end of the rotary sleeve valve 10. This chamber contains not only the driving gears 13 and 14: for the said valve 10, but also the thrust bearing 25 and provides perfect lubrication and protection for these parts as well as lubrication for the valve.

The inner working cylinder 7 is of uniform diameter from the flange 8 at its lower end to the main engine head 19. This feature not only reduces the manufacturing and assembling costs, but permits the inner working cylinder to be withdrawn from below without disturbing the sleeve valve 10 or the main engine head 19. After withdrawing the inner cylinder 7, the sleeve valve 10 may also be Withdrawn from below by first removing the driving gear 13 and its stub shaft 12.

Various changes in the construction of the embodiment illustrated in the drawing may be made without departing from the spirit of the invention, and I do not, therefore, desire to limit myself to the specific construction shown and described, but to interpret the invention broadly within the scope of the appended claims.

Vhat I claim as my invention is:

1. In an internal combustion engine of the rotary sleeve valve type an outer cylinder, an inner stationary working cylii'ider insertable from below and having a water cooled combustion chamber formed integral with and 'inder,

closing its upper end, and extending adjacent said sleeve valve.

2. A rotary sleeve valve internal combustion engine, having an outer water cooled cyla stationary inner working cylinder spaced from said outer cylinder, and a sleeve valve rotating in the space between said cylinders, said stationary inner working cylinder being insertable in the outer cylinder from below, means to align said inner cylinder at the top thereof, means to align and secure the inner cylinder against axial movement at the bottom thereof including cooperating flanges on the inner and outer cylinder and a water jacketed combustion chamber closing the top of the inner cylinder and formed integral therewith, and surrounding the intake and exhaust ports in said cylin ders.

3. A rotary sleeve valve internal combustion engine having an outer water cooled cylinder, a stationary inner working cylinder spaced from the outer cylinder and insertable from the bottom, a sleeve valve rotating in the space between said cylinders, a water cooled combustion chamber formed integral with the inner cylinder, a detachable main engine bead having water passages therein communicating with the water jacket of the outer cylinder and the water jacket of the combustion chamber.

l. rotary sleeve valve internal combustion engine having an outer water cooled cylinder. a removable water cooled cylinder head. a statioi'iary inner working cylinder spaced from the outer cylinder and centered at the top by said cylindcrhead, a sleeve valve rotating in the space between said cylinders, said inner cylinder being stationarily mount ed by a flange. at its lower end and having its upper end closed by a combustion chamber tormed integral therewith, the inner cylinder having a substantially uniform external diameter from the flange at its lower end to the top of the combustion chamber closing its upper end, and a lubrication chamber surrounding the lower portion of the sleeve valve closed by the flange on the inner cylinder.

5. In a rotary sleeve valve internal combustion engine, an outer cylinder, an inner cylinder spaced from the outer cylinder, a sleeve valve rotating in the space between said cylinders, a lubrication chamber surrounding the lower portion of the rotary sleeve valve and containing driving gears, and antifriction bearings for the top and bottom of the sleeve valve, the lower side of the lubrication chamber being closed by a flange on the inner cylinder, the upper part of the lubrication chamber being adjacent the water jacket and cooled thereby.

6. A rotary sleeve valve internal c0mbustion engine having an outer water cooled cylinder, a stationary inner working cylinder spaced from said outer cylinder,-a sleeve valve 

